New guidelines are supposed to protect organ donors in a retrieval procedure that keeps blood flowing through livers, kidneys, lungs and hearts. But bioethicists have troubling questions. Olga Pankova/Getty Images hide caption toggle caption i Olga Pankova/Getty Images The U.S. organ transplant system has approved the first national policy for a controversial procedure used to
People with food allergies are advised to avoid the allergen because treatments are limited.Credit: BSIP/UIG Via Getty Six people who were highly allergic to peanuts can tolerate the nut after receiving a faecal transplant, reports a study published on 5 August in Science Translational Medicine. The small trial1 of 15 people is the first evidence
